6.4.8
Replace the flow restrictor
1. Close the tap water valve.
2. Close the storage tank valve.
3. Open the purified water valve to depressurize the network. The SOURCE light of the
electronic unit is now on. Let the purified water valve opened.
4. Turn off the water purifier by unplugging the power plug.
5. Disconnect the membrane coupling (Figure 17).
6. Disconnect the inlet pipe of the little resin cartridge (Figure 18).
7. Take the membrane holder, the post-treatment filter and the little resin cartridge out (Figure
19).
8. Disconnect the flow restrictor (Figure 20).
9. Remove the flow restrictor and replace it by a new one. Be careful respecting the right way
of the water flow.
10. Wipe off the water on the water purifier chassis to quickly detect a possible leak during the
starting up.
11. Put the membrane holder, the post-treatment filter and the little resin cartridge back in the
system
12. Open the tap water valve.
13. Re-plug the power plug. The POWER, PUMP and FLUSH lights are on: the water purifier is
starting a 2-minute rinse cycle of the reverse osmose membrane. Rinse is over when the
FLUSH light is off: the water purifier is producing purified water.
14. Open the storage tank valve.
15. Wait until all the filter holders are full of water. After a while, the water will come to the
purified water valve: let flowing 3 to 4 liters to correctly drain the system. In the case that
you replaced the ion-exchange resin, measure the conductivity of the purified water. It
should be close to 0 µS/cm.
16. Close the purified water valve. The water purifier is now operational.
O-Classic
operator’s manual
version: 20.01.22
24
Figure 18
Figure 17
Figure 19
Figure 21
Figure 20
